PT - JOURNAL ARTICLE AU - Pringsheim, Tamara AU - Davenport, W. Jeptha AU - Becker, Werner J. TI - Prophylaxis of migraine headache AID - 10.1503/cmaj.081657 DP - 2010 Apr 20 TA - Canadian Medical Association Journal PG - E269--E276 VI - 182 IP - 7 4099 - http://www.cmaj.ca/content/182/7/E269.short 4100 - http://www.cmaj.ca/content/182/7/E269.full SO - CMAJ2010 Apr 20; 182